Csikszentmihalyi named a real psychological state, then asked it to carry a philosophy it cannot support. Our verdict, the working parts, and the dark-flow caveat.

GTD has three habits worth keeping and a system most people cannot maintain. We separate the evidence-backed tools from the folk theory and the productivity theater.

A critical reread of Dale Carnegie’s 1936 classic: the toolkit is confirmed by modern research on listening and persuasion, but the instrumental packaging invites the manipulation it warns against.

The gut-brain axis is real; Perlmutter turned it into cures for Alzheimer’s, autism and depression. We grade the claims confirmed, preliminary, mouse-only or unsupported.

A psychiatrist’s toolkit for talking to people who have stopped listening — extracted in full and checked against listening research, affect labeling studies, and the mirror-neuron backlash. Verdict: read our notes instead.